Took my son for some camping at Aqua Caliente, and explored some of the mud-caves off Arroyo Taipaido, did the loop down Arroyo Del Diablo. Checked out the dropoff, but I'm pretty sure I won't make it without a diff-locker! Fun times...ran into some forum members!

you can totally do the drop off open/open! I did it in my 92 piece of cake. Going downhill is a lot easier than up, as long as you stay in gear in low range off the brakes if you can so you stay in control and don't start sliding.
I'll probably hit that area up again this winter sometime. Fantastic place!